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LKF-60
MDP Hydraulics
(1) Core Working Principle
This valve adopts an integrated design of "flow regulation + pressure compensation". Essentially, it achieves dynamic maintenance of a constant pressure difference between the inlet and outlet of the throttling port through the series connection of a built-in differential pressure reducing valve and an adjustable flow valve. When the inlet pressure or load pressure of the system changes, the compensating valve core will automatically adjust the opening degree of the pressure reducing port according to the equilibrium of the forces at both ends - when the load pressure increases, the valve core moves to the right to increase the pressure reducing port, reducing pressure loss; when the load pressure decreases, the valve core moves to the left to reduce the pressure reducing port, increasing the inlet pressure, ultimately ensuring that the set flow rate is not affected by pressure fluctuations and remains stable and constant. The flow regulation is achieved by rotating the valve stem to change the area of the throttling hole, with intuitive operation and a continuous adjustment range.
(2) Key Performance Parameters
Flow range: 0~60L/min (0~16gpm), covering the flow control requirements of medium-sized and large hydraulic systems;
Nominal pressure: 210bar, the maximum pressure resistance is suitable for the pressure levels of mainstream industrial and construction machinery hydraulic systems;
Oil port specification: 1/2″-NPT threaded interface, in line with international universal installation standards, with reliable sealing performance;
Safety protection: Integrated with an adjustable spring safety ball valve, the factory preset pressure is 1500psi, the adjustment range is 750~3000psi, which can be flexibly set according to the system requirements to prevent overpressure damage;
Compatible media and environment: Compatible with common hydraulic media such as hydraulic oil, water - ethylene glycol, etc. The working temperature range is - 30℃ to + 110℃, capable of withstanding temperature fluctuations and impurity influences in harsh working conditions.
(3) Core Advantages
High flow stability: The pressure compensation mechanism completely eliminates the interference of load changes on the flow. Compared with ordinary throttling valves, the flow stability is significantly improved, ensuring the uniform and precise movement of the actuator (hydraulic cylinder / motor);
Energy saving and efficiency: When combined with a variable pump, it can achieve power matching, reducing energy loss from overflow, and compared with traditional fixed throttling valves, the energy-saving effect is obvious;
Structurally durable: The valve core adopts a precise fitting process, with a gap of ≤ 5μm, strong anti-pollution ability, and combined with high-quality sealing components, it extends the service life and reduces maintenance frequency;
Outstanding cost performance: As a direct supply product from a Chinese manufacturer, it ensures the core performance is comparable to international similar products, and has a significant price advantage, reducing the overall system procurement cost.
This valve features "pressure adaptation, stable flow, and durability in various working conditions", and is widely applicable to both industrial and mobile machinery scenarios. It is particularly suitable for hydraulic circuits that require high precision in flow control and system stability:
(1) Industrial manufacturing sector
Machine tools: feed systems of CNC machines and machining centers, ensuring uniform tool feed speed and enhancing processing accuracy;
Plastic machinery: hydraulic circuits of injection molding machines and extruders, stabilizing melt injection and mold opening speeds to ensure product consistency in molding;
General machinery: actuator speed control of hydraulic presses and bending machines, achieving smooth operation under heavy-load conditions;
Energy and chemical industry: hydraulic lubrication systems in steel mills and fluid transportation circuits in petrochemicals, suitable for high-pressure and wide-temperature working environments.
(2) Mobile construction machinery sector
Mining machinery: control of the boom, arm, and slewing mechanism of excavators, maintaining stable speeds of all actuators during compound movements;
Lifting and transportation: lifting and slewing mechanisms of truck cranes and loaders, ensuring smooth and safe heavy-load lifting processes;
Special vehicles: hydraulic lifting systems of dump trucks and drive circuits of port handling equipment, capable of withstanding bumpy road conditions and frequent start-stop operations;
Agricultural machinery: suspension and drive systems of large tractors for farm implements, adapting to complex load changes in the field.
(3) Special working conditions scenarios
Mining machinery, paper-making equipment, port machinery, etc., require resistance to pressure fluctuations, tolerance to dust and oil contamination, as well as complex hydraulic systems with multiple actuators working together.
(1) Product Series Matrix
For different flow rates and installation requirements, MDP Hydraulics has launched the LKF series of full-range products to meet the diverse system adaptations:
LKF-40: Oil port size 3/8″-NPT, flow range 0~30L/min (0~8gpm), suitable for small hydraulic systems;
LKF-60: Main model, oil port size 1/2″-NPT, flow 0~60L/min (0~16gpm), covering medium and large systems;
LKF-114: Oil port size 3/4″-NPT, flow 0~114L/min (0~30gpm), suitable for high-flow hydraulic circuits (such as large hydraulic machines, port cranes).
(2) Supporting Components and System Solutions
Compatible Components: Can be seamlessly integrated with variable pumps, proportional valves, pressure reducing valves, hydraulic filters, etc., forming a complete flow-pressure control circuit to enhance the overall system efficiency;
Installation Assistance: Provides compatible seals, installation brackets and connectors, supporting both internal pilot and external pilot oil supply methods, meeting different system layout requirements;
Maintenance Accessories: Equipped with dedicated filter element kits and sealing component kits, facilitating later maintenance and replacement, prolonging the valve service life.
(3) Selection and Usage Tips
Selection Basis: Select based on system working pressure, rated flow rate, medium type and interface specifications to ensure valve parameters match system requirements;
Installation Requirements: Ensure the cleanliness of the oil meets ISO 4406 ≤18/16/13 standards during installation to avoid impurities causing valve core jamming;
Commissioning Suggestions: The safety pressure setting should be slightly higher than the system's maximum working pressure. Flow adjustment can be gradually calibrated by rotating the valve stem to ensure smooth system operation;
Maintenance Cycle: Regularly check the cleanliness of the oil and valve leakage, and replace the filter and sealing components every 6 to 12 months according to the working conditions.
(4) Manufacturer Service Support
As a direct supplier, MDP Hydraulics provides one-stop services such as product technical parameter consultation, selection guidance, installation and commissioning suggestions, supporting batch purchasing customization and after-sales warranty to ensure stable operation of the product and quick response.
